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69 lines
2.7 KiB
69 lines
2.7 KiB
'use strict'; |
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var GetIntrinsic = require('get-intrinsic'); |
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var $TypeError = GetIntrinsic('%TypeError%'); |
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var ArrayCreate = require('./ArrayCreate'); |
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var CreateDataPropertyOrThrow = require('./CreateDataPropertyOrThrow'); |
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var GetMatchIndexPair = require('./GetMatchIndexPair'); |
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var IsArray = require('./IsArray'); |
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var OrdinaryObjectCreate = require('./OrdinaryObjectCreate'); |
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var ToString = require('./ToString'); |
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var Type = require('./Type'); |
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var every = require('../helpers/every'); |
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var isMatchRecord = require('../helpers/isMatchRecord'); |
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var isStringOrUndefined = function isStringOrUndefined(s) { |
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return typeof s === 'undefined' || typeof s === 'string'; |
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}; |
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var isMatchRecordOrUndefined = function isMatchRecordOrUndefined(m) { |
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return typeof m === 'undefined' || isMatchRecord(m); |
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}; |
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var MAX_ARRAY_LENGTH = Math.pow(2, 32) - 1; |
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// https://ecma-international.org/ecma-262/13.0/#sec-getmatchindexpair |
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module.exports = function MakeMatchIndicesIndexPairArray(S, indices, groupNames, hasGroups) { |
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if (Type(S) !== 'String') { |
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throw new $TypeError('Assertion failed: `S` must be a String'); |
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} |
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if (!IsArray(indices) || !every(indices, isMatchRecordOrUndefined)) { |
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throw new $TypeError('Assertion failed: `indices` must be a List of either Match Records or `undefined`'); |
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} |
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if (!IsArray(groupNames) || !every(groupNames, isStringOrUndefined)) { |
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throw new $TypeError('Assertion failed: `groupNames` must be a List of either Strings or `undefined`'); |
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} |
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if (Type(hasGroups) !== 'Boolean') { |
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throw new $TypeError('Assertion failed: `hasGroups` must be a Boolean'); |
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} |
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var n = indices.length; // step 1 |
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if (!(n < MAX_ARRAY_LENGTH)) { |
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throw new $TypeError('Assertion failed: `indices` length must be less than the max array size, 2**32 - 1'); |
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} |
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if (groupNames.length !== n - 1) { |
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throw new $TypeError('Assertion failed: `groupNames` must have exactly one fewer item than `indices`'); |
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} |
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var A = ArrayCreate(n); // step 5 |
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var groups = hasGroups ? OrdinaryObjectCreate(null) : void undefined; // step 6-7 |
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CreateDataPropertyOrThrow(A, 'groups', groups); // step 8 |
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for (var i = 0; i < n; i += 1) { // step 9 |
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var matchIndices = indices[i]; // step 9.a |
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// eslint-disable-next-line no-negated-condition |
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var matchIndexPair = typeof matchIndices !== 'undefined' ? GetMatchIndexPair(S, matchIndices) : void undefined; // step 9.b-9.c |
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CreateDataPropertyOrThrow(A, ToString(i), matchIndexPair); // step 9.d |
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if (i > 0 && typeof groupNames[i - 1] !== 'undefined') { // step 9.e |
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if (!groups) { |
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throw new $TypeError('if `hasGroups` is `false`, `groupNames` can only contain `undefined` values'); |
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} |
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CreateDataPropertyOrThrow(groups, groupNames[i - 1], matchIndexPair); // step 9.e.i |
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} |
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} |
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return A; // step 10 |
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};
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